noun, adverb
that year; the same year
Refers to a specific year previously mentioned or understood from context. Often used in news, reports, and formal writing.
彼は2010年に大学を卒業し、同年に結婚した。
He graduated from university in 2010 and got married that same year.
noun, adverb
Used to say that two or more people are the same age. Often appears in formal or written contexts; in casual speech 同い年 (おないどし) is more common.
彼と私は同年です。
He and I are the same age.